Summary
@contextstream/mcp-server v0.4.66 was classified as CRITICAL RISK with a risk score of 851. Sigil detected 37 findings across 30 files, covering phases including network exfiltration, install hooks, code patterns, obfuscation. Review the findings below before installing this package.
v0.4.66
26 March 2026, 22:09 UTC
by Sigil Bot
Risk Score
851
Findings
37
Files Scanned
30
Provenance
Findings by Phase
Phase Ordering
Phases are ordered by criticality, with the most dangerous at the top. Click any phase header to expand or collapse its findings. Critical phases are expanded by default.
install-makefile-curl
HIGHMakefile/script pipes remote content to shell
package/dist/hooks/runner.js:1098
When mentioning the update, provide these commands (user can choose their preferred method):
- macOS/Linux: curl -fsSL https://contextstream.io/scripts/setup.sh | bash
- Windows: irm https://contextstream.io/scripts/setup.ps1 | iexWhy was this flagged?
A script or Makefile pipes content from a remote URL directly into a shell (curl | sh or wget | bash). This is inherently dangerous because the remote content can change at any time, and the command runs with the current user's permissions. Rated HIGH because it requires manual execution (unlike install hooks) but still executes arbitrary remote code.
install-makefile-curl
HIGHMakefile/script pipes remote content to shell
package/dist/hooks/runner.js:1184
command = "bash";
args = ["-c", "curl -fsSL https://contextstream.io/scripts/setup.sh | bash"];
shell = false;Why was this flagged?
A script or Makefile pipes content from a remote URL directly into a shell (curl | sh or wget | bash). This is inherently dangerous because the remote content can change at any time, and the command runs with the current user's permissions. Rated HIGH because it requires manual execution (unlike install hooks) but still executes arbitrary remote code.
install-makefile-curl
HIGHMakefile/script pipes remote content to shell
package/dist/hooks/runner.js:1263
npm: "npm install -g @contextstream/mcp-server@latest",
macLinux: "curl -fsSL https://contextstream.io/scripts/setup.sh | bash",
windows: "irm https://contextstream.io/scripts/setup.ps1 | iex"Why was this flagged?
A script or Makefile pipes content from a remote URL directly into a shell (curl | sh or wget | bash). This is inherently dangerous because the remote content can change at any time, and the command runs with the current user's permissions. Rated HIGH because it requires manual execution (unlike install hooks) but still executes arbitrary remote code.
install-makefile-curl
HIGHMakefile/script pipes remote content to shell
package/dist/hooks/runner.js:2742
2. Provide update commands (user chooses preferred method):
- macOS/Linux: \`curl -fsSL https://contextstream.io/scripts/setup.sh | bash\`
- Windows: \`irm https://contextstream.io/scripts/setup.ps1 | iex\`Why was this flagged?
A script or Makefile pipes content from a remote URL directly into a shell (curl | sh or wget | bash). This is inherently dangerous because the remote content can change at any time, and the command runs with the current user's permissions. Rated HIGH because it requires manual execution (unlike install hooks) but still executes arbitrary remote code.
install-makefile-curl
HIGHMakefile/script pipes remote content to shell
package/dist/hooks/runner.js:3108
- **[VERSION_NOTICE]** or **[VERSION_CRITICAL]**: Tell user about the update in a helpful, non-annoying way. Provide update commands:
- macOS/Linux: \`curl -fsSL https://contextstream.io/scripts/setup.sh | bash\`
- Windows: \`irm https://contextstream.io/scripts/setup.ps1 | iex\`Why was this flagged?
A script or Makefile pipes content from a remote URL directly into a shell (curl | sh or wget | bash). This is inherently dangerous because the remote content can change at any time, and the command runs with the current user's permissions. Rated HIGH because it requires manual execution (unlike install hooks) but still executes arbitrary remote code.
install-makefile-curl
HIGHMakefile/script pipes remote content to shell
package/dist/hooks/runner.js:3339
\`\`\`bash
curl -fsSL https://contextstream.io/scripts/setup.sh | bash
\`\`\`Why was this flagged?
A script or Makefile pipes content from a remote URL directly into a shell (curl | sh or wget | bash). This is inherently dangerous because the remote content can change at any time, and the command runs with the current user's permissions. Rated HIGH because it requires manual execution (unlike install hooks) but still executes arbitrary remote code.
install-makefile-curl
HIGHMakefile/script pipes remote content to shell
package/dist/hooks/session-init.js:24
npm: "npm install -g @contextstream/mcp-server@latest",
macLinux: "curl -fsSL https://contextstream.io/scripts/setup.sh | bash",
windows: "irm https://contextstream.io/scripts/setup.ps1 | iex"Why was this flagged?
A script or Makefile pipes content from a remote URL directly into a shell (curl | sh or wget | bash). This is inherently dangerous because the remote content can change at any time, and the command runs with the current user's permissions. Rated HIGH because it requires manual execution (unlike install hooks) but still executes arbitrary remote code.
install-makefile-curl
HIGHMakefile/script pipes remote content to shell
package/dist/hooks/session-init.js:176
When mentioning the update, provide these commands (user can choose their preferred method):
- macOS/Linux: curl -fsSL https://contextstream.io/scripts/setup.sh | bash
- Windows: irm https://contextstream.io/scripts/setup.ps1 | iexWhy was this flagged?
A script or Makefile pipes content from a remote URL directly into a shell (curl | sh or wget | bash). This is inherently dangerous because the remote content can change at any time, and the command runs with the current user's permissions. Rated HIGH because it requires manual execution (unlike install hooks) but still executes arbitrary remote code.
install-makefile-curl
HIGHMakefile/script pipes remote content to shell
package/dist/hooks/session-init.js:262
command = "bash";
args = ["-c", "curl -fsSL https://contextstream.io/scripts/setup.sh | bash"];
shell = false;Why was this flagged?
A script or Makefile pipes content from a remote URL directly into a shell (curl | sh or wget | bash). This is inherently dangerous because the remote content can change at any time, and the command runs with the current user's permissions. Rated HIGH because it requires manual execution (unlike install hooks) but still executes arbitrary remote code.
install-makefile-curl
HIGHMakefile/script pipes remote content to shell
package/dist/hooks/session-init.js:653
2. Provide update commands (user chooses preferred method):
- macOS/Linux: \`curl -fsSL https://contextstream.io/scripts/setup.sh | bash\`
- Windows: \`irm https://contextstream.io/scripts/setup.ps1 | iex\`Why was this flagged?
A script or Makefile pipes content from a remote URL directly into a shell (curl | sh or wget | bash). This is inherently dangerous because the remote content can change at any time, and the command runs with the current user's permissions. Rated HIGH because it requires manual execution (unlike install hooks) but still executes arbitrary remote code.
install-makefile-curl
HIGHMakefile/script pipes remote content to shell
package/dist/hooks/session-init.js:1019
- **[VERSION_NOTICE]** or **[VERSION_CRITICAL]**: Tell user about the update in a helpful, non-annoying way. Provide update commands:
- macOS/Linux: \`curl -fsSL https://contextstream.io/scripts/setup.sh | bash\`
- Windows: \`irm https://contextstream.io/scripts/setup.ps1 | iex\`Why was this flagged?
A script or Makefile pipes content from a remote URL directly into a shell (curl | sh or wget | bash). This is inherently dangerous because the remote content can change at any time, and the command runs with the current user's permissions. Rated HIGH because it requires manual execution (unlike install hooks) but still executes arbitrary remote code.
install-makefile-curl
HIGHMakefile/script pipes remote content to shell
package/dist/hooks/session-init.js:1250
\`\`\`bash
curl -fsSL https://contextstream.io/scripts/setup.sh | bash
\`\`\`Why was this flagged?
A script or Makefile pipes content from a remote URL directly into a shell (curl | sh or wget | bash). This is inherently dangerous because the remote content can change at any time, and the command runs with the current user's permissions. Rated HIGH because it requires manual execution (unlike install hooks) but still executes arbitrary remote code.
install-makefile-curl
HIGHMakefile/script pipes remote content to shell
package/dist/hooks/user-prompt-submit.js:17
npm: "npm install -g @contextstream/mcp-server@latest",
macLinux: "curl -fsSL https://contextstream.io/scripts/setup.sh | bash",
windows: "irm https://contextstream.io/scripts/setup.ps1 | iex"Why was this flagged?
A script or Makefile pipes content from a remote URL directly into a shell (curl | sh or wget | bash). This is inherently dangerous because the remote content can change at any time, and the command runs with the current user's permissions. Rated HIGH because it requires manual execution (unlike install hooks) but still executes arbitrary remote code.
install-makefile-curl
HIGHMakefile/script pipes remote content to shell
package/dist/hooks/user-prompt-submit.js:169
When mentioning the update, provide these commands (user can choose their preferred method):
- macOS/Linux: curl -fsSL https://contextstream.io/scripts/setup.sh | bash
- Windows: irm https://contextstream.io/scripts/setup.ps1 | iexWhy was this flagged?
A script or Makefile pipes content from a remote URL directly into a shell (curl | sh or wget | bash). This is inherently dangerous because the remote content can change at any time, and the command runs with the current user's permissions. Rated HIGH because it requires manual execution (unlike install hooks) but still executes arbitrary remote code.
install-makefile-curl
HIGHMakefile/script pipes remote content to shell
package/dist/index.js:247
When mentioning the update, provide these commands (user can choose their preferred method):
- macOS/Linux: curl -fsSL https://contextstream.io/scripts/setup.sh | bash
- Windows: irm https://contextstream.io/scripts/setup.ps1 | iexWhy was this flagged?
A script or Makefile pipes content from a remote URL directly into a shell (curl | sh or wget | bash). This is inherently dangerous because the remote content can change at any time, and the command runs with the current user's permissions. Rated HIGH because it requires manual execution (unlike install hooks) but still executes arbitrary remote code.
install-makefile-curl
HIGHMakefile/script pipes remote content to shell
package/dist/index.js:350
command = "bash";
args = ["-c", "curl -fsSL https://contextstream.io/scripts/setup.sh | bash"];
shell = false;Why was this flagged?
A script or Makefile pipes content from a remote URL directly into a shell (curl | sh or wget | bash). This is inherently dangerous because the remote content can change at any time, and the command runs with the current user's permissions. Rated HIGH because it requires manual execution (unlike install hooks) but still executes arbitrary remote code.
install-makefile-curl
HIGHMakefile/script pipes remote content to shell
package/dist/index.js:429
npm: "npm install -g @contextstream/mcp-server@latest",
macLinux: "curl -fsSL https://contextstream.io/scripts/setup.sh | bash",
windows: "irm https://contextstream.io/scripts/setup.ps1 | iex"Why was this flagged?
A script or Makefile pipes content from a remote URL directly into a shell (curl | sh or wget | bash). This is inherently dangerous because the remote content can change at any time, and the command runs with the current user's permissions. Rated HIGH because it requires manual execution (unlike install hooks) but still executes arbitrary remote code.
install-makefile-curl
HIGHMakefile/script pipes remote content to shell
package/dist/index.js:3818
2. Provide update commands (user chooses preferred method):
- macOS/Linux: \`curl -fsSL https://contextstream.io/scripts/setup.sh | bash\`
- Windows: \`irm https://contextstream.io/scripts/setup.ps1 | iex\`Why was this flagged?
A script or Makefile pipes content from a remote URL directly into a shell (curl | sh or wget | bash). This is inherently dangerous because the remote content can change at any time, and the command runs with the current user's permissions. Rated HIGH because it requires manual execution (unlike install hooks) but still executes arbitrary remote code.
install-makefile-curl
HIGHMakefile/script pipes remote content to shell
package/dist/index.js:4184
- **[VERSION_NOTICE]** or **[VERSION_CRITICAL]**: Tell user about the update in a helpful, non-annoying way. Provide update commands:
- macOS/Linux: \`curl -fsSL https://contextstream.io/scripts/setup.sh | bash\`
- Windows: \`irm https://contextstream.io/scripts/setup.ps1 | iex\`Why was this flagged?
A script or Makefile pipes content from a remote URL directly into a shell (curl | sh or wget | bash). This is inherently dangerous because the remote content can change at any time, and the command runs with the current user's permissions. Rated HIGH because it requires manual execution (unlike install hooks) but still executes arbitrary remote code.
install-makefile-curl
HIGHMakefile/script pipes remote content to shell
package/dist/index.js:4415
\`\`\`bash
curl -fsSL https://contextstream.io/scripts/setup.sh | bash
\`\`\`Why was this flagged?
A script or Makefile pipes content from a remote URL directly into a shell (curl | sh or wget | bash). This is inherently dangerous because the remote content can change at any time, and the command runs with the current user's permissions. Rated HIGH because it requires manual execution (unlike install hooks) but still executes arbitrary remote code.
install-makefile-curl
HIGHMakefile/script pipes remote content to shell
package/dist/test-server.js:4058
npm: "npm install -g @contextstream/mcp-server@latest",
macLinux: "curl -fsSL https://contextstream.io/scripts/setup.sh | bash",
windows: "irm https://contextstream.io/scripts/setup.ps1 | iex"Why was this flagged?
A script or Makefile pipes content from a remote URL directly into a shell (curl | sh or wget | bash). This is inherently dangerous because the remote content can change at any time, and the command runs with the current user's permissions. Rated HIGH because it requires manual execution (unlike install hooks) but still executes arbitrary remote code.
install-npm-postinstall
CRITICALnpm lifecycle script — runs automatically on install
package/package.json:34
"prepublishOnly": "npm run build",
"postinstall": "node scripts/postinstall.js"
},Why was this flagged?
npm lifecycle scripts like postinstall run automatically during package installation with no user interaction required. This is the #1 attack vector for malicious npm packages — attackers embed data theft or backdoor installation in these hooks. Rated CRITICAL because code executes before the developer can review it.
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